Is port 8001 the alternate HTTP port for you application server? As a well-known port number that is unusual.
There are several ways to validate the installation and configuration of Reader Extensions.
1. From LiveCycle ES Administration Console, click About. The splash screen includes the list of installed components.
2. Check the Configuration Manager log file (on JBoss see C:\Adobe\LiveCycle8.2\configurationManager\log\lcm.0.log or \opt\Adobe/LiveCycle8.2/configurationManager/log/lcm0.log). Do a find on /ReaderExtensions and you will find URL deployed.
3. Check the server log to validate there are no errors related to Reader Extensions.
4. Check the server log and validate the Reader Extensions was successfully deployed. Search for "ctxPath=/ReaderExtensions".